blob: db49e0d796b1bf50642365aa92d63c5a83a07320 [file] [log] [blame]
Arnd Bergmanna0ae9c72007-06-13 02:30:17 +10001source "arch/powerpc/platforms/Kconfig.cputype"
Johannes Berg17e638b2007-03-19 11:53:53 +01002
Paul Mackerras14cf11a2005-09-26 16:04:21 +10003config PPC32
4 bool
5 default y if !PPC64
6
kerstin jonsson234a71a2010-10-22 00:17:55 +00007config 32BIT
8 bool
9 default y if PPC32
10
Paul Mackerras14cf11a2005-09-26 16:04:21 +100011config 64BIT
12 bool
13 default y if PPC64
14
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100015config WORD_SIZE
16 int
17 default 64 if PPC64
18 default 32 if !PPC64
19
Jeremy Fitzhardinge600715d2008-09-11 01:31:45 -070020config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
22
FUJITA Tomonori787d44c2010-10-01 11:12:54 +000023config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
25
Paul Mackerras14cf11a2005-09-26 16:04:21 +100026config MMU
27 bool
28 default y
29
Tejun Heoc2a7e812009-08-14 15:00:53 +090030config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090031 def_bool PPC64
32
Tejun Heoc2a7e812009-08-14 15:00:53 +090033config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010034 def_bool PPC64
35
Michael Ellerman551b81f2009-10-13 19:44:44 +000036config NR_IRQS
37 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000038 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000039 default "512"
40 help
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
45
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100046config STACKTRACE_SUPPORT
47 bool
48 default y
49
Arnd Bergmann01f4b8b2008-07-11 00:08:18 +100050config HAVE_LATENCYTOP_SUPPORT
51 def_bool y
52
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100053config TRACE_IRQFLAGS_SUPPORT
54 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100055 default y
56
57config LOCKDEP_SUPPORT
58 bool
59 default y
60
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061config RWSEM_GENERIC_SPINLOCK
62 bool
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66 default y
67
Nick Piggin95c354f2008-01-30 13:31:20 +010068config GENERIC_LOCKBREAK
69 bool
70 default y
71 depends on SMP && PREEMPT
72
David Howellsf0d1b0b2006-12-08 02:37:49 -080073config ARCH_HAS_ILOG2_U32
74 bool
David Howellsef55d532006-12-08 02:37:53 -080075 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080076
77config ARCH_HAS_ILOG2_U64
78 bool
David Howellsef55d532006-12-08 02:37:53 -080079 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080080
Akinobu Mitae779b2f2006-03-26 01:39:33 -080081config GENERIC_HWEIGHT
82 bool
83 default y
84
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +100085config ARCH_HAS_DMA_SET_COHERENT_MASK
86 bool
87
Paul Mackerras14cf11a2005-09-26 16:04:21 +100088config PPC
89 bool
90 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040091 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080092 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000093 select BINFMT_ELF
Kees Cook2b68f6c2015-04-14 15:48:00 -070094 select ARCH_HAS_ELF_RANDOMIZE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100095 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080096 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010097 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000098 select HAVE_FTRACE_MCOUNT_RECORD
99 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -0400100 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -0500101 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -0700102 select SYSCTL_EXCEPTION_TRACE
Michael Buesch7444a722008-07-25 01:46:11 -0700103 select ARCH_WANT_OPTIONAL_GPIOLIB
Stephen Rothwell4febd952013-03-07 15:48:16 +1100104 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100105 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700106 select HAVE_IOREMAP_PROT
Anton Blanchard0b5e6662013-09-23 12:05:12 +1000107 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500108 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500109 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800110 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000111 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000112 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800113 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000114 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000115 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400116 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700117 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700118 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000119 select GENERIC_ATOMIC64 if PPC32
Catalin Marinas74634492012-07-30 14:41:09 -0700120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200121 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000122 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530123 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700124 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000125 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700126 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100127 select GENERIC_IRQ_SHOW
128 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000129 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700130 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000131 select HAVE_SYSCALL_TRACEPOINTS
Denis Kirjanoveb84bab2015-02-17 10:04:43 +0300132 select HAVE_BPF_JIT
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000133 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800134 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Riku Voipio957e3fa2014-12-12 16:57:44 -0800135 select ARCH_HAS_GCOV_PROFILE_ALL
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000136 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000137 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400138 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000139 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530140 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
141 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000142 select GENERIC_STRNCPY_FROM_USER
143 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930144 select HAVE_MOD_ARCH_SPECIFIC
145 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400146 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000147 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500148 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500149 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700150 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200151 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100152 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900153 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200154 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000155 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000156 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530157 select HAVE_GENERIC_RCU_GUP
Anton Blanchardc54b2bf2015-04-09 12:52:56 +1000158 select HAVE_PERF_EVENTS_NMI if PPC64
Borislav Petkovb01aec92015-05-21 19:59:31 +0200159 select EDAC_SUPPORT
160 select EDAC_ATOMIC_SCRUB
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +1000161 select ARCH_HAS_DMA_SET_COHERENT_MASK
Michael Ellerman2449acc2015-07-23 20:21:09 +1000162 select HAVE_ARCH_SECCOMP_FILTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000163
Anton Blanchard7a332b02013-09-23 12:04:51 +1000164config GENERIC_CSUM
165 def_bool CPU_LITTLE_ENDIAN
166
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167config EARLY_PRINTK
168 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100169 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000170
Jason Baronb71d47c2013-11-25 23:23:11 +0000171config PANIC_TIMEOUT
172 int
173 default 180
174
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000175config COMPAT
176 bool
177 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800178 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400179 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500180 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000181
182config SYSVIPC_COMPAT
183 bool
184 depends on COMPAT && SYSVIPC
185 default y
186
187# All PPC32s use generic nvram driver through ppc_md
188config GENERIC_NVRAM
189 bool
190 default y if PPC32
191
Ingo Molnarae1e9132008-11-11 09:05:16 +0100192config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000193 bool
194 default y
195
196config ARCH_MAY_HAVE_PC_FDC
197 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400198 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000199
Kumar Gala08264cb2006-01-10 21:43:56 -0600200config PPC_UDBG_16550
201 bool
202 default n
203
Kumar Gala08264cb2006-01-10 21:43:56 -0600204config GENERIC_TBSYNC
205 bool
206 default y if PPC32 && SMP
207 default n
208
Al Viroe65e1fc2006-09-12 03:04:40 -0400209config AUDIT_ARCH
210 bool
211 default y
212
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800213config GENERIC_BUG
214 bool
215 default y
216 depends on BUG
217
Johannes Bergb3028872007-03-20 05:18:02 +1100218config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500219 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100220 bool
221
David Gibson6c5b59b2011-04-14 18:29:16 +0000222config EPAPR_BOOT
223 bool
224 help
225 Used to allow a board to specify it wants an ePAPR compliant wrapper.
226 default n
227
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600228config DEFAULT_UIMAGE
229 bool
230 help
231 Used to allow a board to specify it wants a uImage built by default
232 default n
233
Johannes Berg801e4062007-12-08 02:12:39 +0100234config ARCH_HIBERNATION_POSSIBLE
235 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000236 default y
237
Johannes Bergf4cb5702007-12-08 02:14:00 +0100238config ARCH_SUSPEND_POSSIBLE
239 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400240 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800241 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
242 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100243
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100244config PPC_DCR_NATIVE
245 bool
246 default n
247
248config PPC_DCR_MMIO
249 bool
250 default n
251
252config PPC_DCR
253 bool
254 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
255 default y
256
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100257config PPC_OF_PLATFORM_PCI
258 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100259 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100260 depends on PPC64 # not supported on 32 bits yet
261 default n
262
Akinobu Mita6a11f752009-03-31 15:23:17 -0700263config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600264 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700265 def_bool y
266
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000267config ARCH_SUPPORTS_UPROBES
268 def_bool y
269
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000270config PPC_ADV_DEBUG_REGS
271 bool
272 depends on 40x || BOOKE
273 default y
274
275config PPC_ADV_DEBUG_IACS
276 int
277 depends on PPC_ADV_DEBUG_REGS
278 default 4 if 44x
279 default 2
280
281config PPC_ADV_DEBUG_DACS
282 int
283 depends on PPC_ADV_DEBUG_REGS
284 default 2
285
286config PPC_ADV_DEBUG_DVCS
287 int
288 depends on PPC_ADV_DEBUG_REGS
289 default 2 if 44x
290 default 0
291
292config PPC_ADV_DEBUG_DAC_RANGE
293 bool
294 depends on PPC_ADV_DEBUG_REGS && 44x
295 default y
296
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000297config PPC_EMULATE_SSTEP
298 bool
299 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
300
Scott Wood1c980252014-08-08 18:40:42 -0500301config ZONE_DMA32
302 bool
303 default y if PPC64
304
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700305config PGTABLE_LEVELS
306 int
307 default 2 if !PPC64
308 default 3 if PPC_64K_PAGES
309 default 4
310
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000311source "init/Kconfig"
312
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700313source "kernel/Kconfig.freezer"
314
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100315source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500316source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000317
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000318menu "Kernel options"
319
320config HIGHMEM
321 bool "High memory support"
322 depends on PPC32
323
324source kernel/Kconfig.hz
325source kernel/Kconfig.preempt
326source "fs/Kconfig.binfmt"
327
Mel Gormanba72cb82007-11-28 16:21:13 -0800328config HUGETLB_PAGE_SIZE_VARIABLE
329 bool
330 depends on HUGETLB_PAGE
331 default y
332
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000333config MATH_EMULATION
334 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000335 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000336 ---help---
337 Some PowerPC chips designed for embedded applications do not have
338 a floating-point unit and therefore do not implement the
339 floating-point instructions in the PowerPC instruction set. If you
340 say Y here, the kernel will include code to emulate a floating-point
341 unit, which will allow programs that use floating-point
342 instructions to run.
343
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000344 This is also useful to emulate missing (optional) instructions
345 such as fsqrt on cores that do have an FPU but do not implement
346 them (such as Freescale BookE).
347
Kevin Haoe05c0e82013-07-16 19:57:15 +0800348choice
349 prompt "Math emulation options"
350 default MATH_EMULATION_FULL
351 depends on MATH_EMULATION
352
353config MATH_EMULATION_FULL
354 bool "Emulate all the floating point instructions"
355 ---help---
356 Select this option will enable the kernel to support to emulate
357 all the floating point instructions. If your SoC doesn't have
358 a FPU, you should select this.
359
360config MATH_EMULATION_HW_UNIMPLEMENTED
361 bool "Just emulate the FPU unimplemented instructions"
362 ---help---
363 Select this if you know there does have a hardware FPU on your
364 SoC, but some floating point instructions are not implemented by that.
365
366endchoice
367
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000368config PPC_TRANSACTIONAL_MEM
369 bool "Transactional Memory support for POWERPC"
370 depends on PPC_BOOK3S_64
371 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100372 select ALTIVEC
373 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000374 default n
375 ---help---
376 Support user-mode Transactional Memory on POWERPC.
377
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800378config IOMMU_HELPER
379 def_bool PPC64
380
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000381config SWIOTLB
382 bool "SWIOTLB support"
383 default n
384 select IOMMU_HELPER
385 ---help---
386 Support for IO bounce buffering for systems without an IOMMU.
387 This allows us to DMA to the full physical address space on
388 platforms where the size of a physical address is larger
389 than the bus address. Not all platforms support this.
390
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000391config HOTPLUG_CPU
392 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000393 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800394 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000395 ---help---
396 Say Y here to be able to disable and re-enable individual
397 CPUs at runtime on SMP machines.
398
399 Say N if you are unsure.
400
Nathan Fontenot12633e82009-11-25 17:23:25 +0000401config ARCH_CPU_PROBE_RELEASE
402 def_bool y
403 depends on HOTPLUG_CPU
404
Yasunori Gotocc576372006-06-29 02:24:27 -0700405config ARCH_ENABLE_MEMORY_HOTPLUG
406 def_bool y
407
Badari Pulavartya99824f2008-02-05 00:10:18 -0800408config ARCH_HAS_WALK_MEMORY
409 def_bool y
410
Badari Pulavarty14824712008-02-05 00:10:17 -0800411config ARCH_ENABLE_MEMORY_HOTREMOVE
412 def_bool y
413
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530414config PPC64_SUPPORTS_MEMORY_FAILURE
415 bool "Add support for memory hwpoison"
416 depends on PPC_BOOK3S_64
417 default "y" if PPC_POWERNV
418 select ARCH_SUPPORTS_MEMORY_FAILURE
419
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000420config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800421 bool "kexec system call"
Tiejun Chen96eea642015-10-06 22:48:22 -0500422 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
Dave Young2965faa2015-09-09 15:38:55 -0700423 select KEXEC_CORE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000424 help
425 kexec is a system call that implements the ability to shutdown your
426 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400427 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000428 you can start any kernel with it, not just Linux.
429
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400430 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000431
432 It is an ongoing process to be certain the hardware in a machine
433 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200434 initially work for you. As of this writing the exact hardware
435 interface is strongly in flux, so no good recommendation can be
436 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000437
Haren Mynenie8625d462006-01-14 13:48:25 -0800438config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000439 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000440 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700441 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800442 help
443 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000444 The same kernel binary can be used as production kernel and dump
445 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800446
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000447config FA_DUMP
448 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100449 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100450 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000451 A robust mechanism to get reliable kernel crash dump with
452 assistance from firmware. This approach does not use kexec,
453 instead firmware assists in booting the kdump kernel
454 while preserving memory contents. Firmware-assisted dump
455 is meant to be a kdump replacement offering robustness and
456 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100457
458 If unsure, say "N"
459
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000460config IRQ_ALL_CPUS
461 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200462 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000463 help
464 This option gives the kernel permission to distribute IRQs across
465 multiple CPUs. Saying N here will route all IRQs to the first
466 CPU. Generally saying Y is safe, although some problems have been
467 reported with SMP Power Macintoshes with this option enabled.
468
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700469config NUMA
470 bool "NUMA support"
471 depends on PPC64
472 default y if SMP && PPC_PSERIES
473
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700474config NODES_SHIFT
475 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000476 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700477 default "4"
478 depends on NEED_MULTIPLE_NODES
479
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700480config USE_PERCPU_NUMA_NODE_ID
481 def_bool y
482 depends on NUMA
483
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700484config HAVE_MEMORYLESS_NODES
485 def_bool y
486 depends on NUMA
487
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000488config ARCH_SELECT_MEMORY_MODEL
489 def_bool y
490 depends on PPC64
491
492config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000493 def_bool y
494 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000495
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000496config ARCH_SPARSEMEM_ENABLE
497 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000498 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700499 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100500
501config ARCH_SPARSEMEM_DEFAULT
502 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100503 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000504
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100505config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000506 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100507
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700508source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000509
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800510config ARCH_MEMORY_PROBE
511 def_bool y
512 depends on MEMORY_HOTPLUG
513
Andy Whitcroft75167952006-10-21 10:24:14 -0700514# Some NUMA nodes have memory ranges that span
515# other nodes. Even though a pfn is valid and
516# between a node's start and end pfns, it may not
517# reside on that node. See memmap_init_zone()
518# for details.
519config NODES_SPAN_OTHER_NODES
520 def_bool y
521 depends on NEED_MULTIPLE_NODES
522
Yuri Tikhonove1240122009-01-29 01:40:44 +0000523config STDBINUTILS
524 bool "Using standard binutils settings"
525 depends on 44x
526 default y
527 help
528 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
529 Note, that kernel will be able to run only those applications,
530 which had been compiled using binutils later than 2.17.50.0.3 with
531 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
532 the older binutils, you can patch them with a trivial patch, which
533 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
534
Ilya Yanokca9153a2008-12-11 04:55:41 +0300535choice
536 prompt "Page size"
537 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100538 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300539 Select the kernel logical page size. Increasing the page size
540 will reduce software overhead at each page boundary, allow
541 hardware prefetch mechanisms to be more effective, and allow
542 larger dma transfers increasing IO efficiency and reducing
543 overhead. However the utilization of memory will increase.
544 For example, each cached file will using a multiple of the
545 page size to hold its contents and the difference between the
546 end of file and the end of page is wasted.
547
548 Some dedicated systems, such as software raid serving with
549 accelerated calculations, have shown significant increases.
550
551 If you configure a 64 bit kernel for 64k pages but the
552 processor does not support them, then the kernel will simulate
553 them with 4k pages, loading them on demand, but with the
554 reduced software overhead and larger internal fragmentation.
555 For the 32 bit kernel, a large page option will not be offered
556 unless it is supported by the configured processor.
557
558 If unsure, choose 4K_PAGES.
559
560config PPC_4K_PAGES
561 bool "4k page size"
562
563config PPC_16K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000564 bool "16k page size"
565 depends on 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300566
567config PPC_64K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000568 bool "64k page size"
569 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
Ilya Yanokca9153a2008-12-11 04:55:41 +0300570
Yuri Tikhonove1240122009-01-29 01:40:44 +0000571config PPC_256K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000572 bool "256k page size"
573 depends on 44x && !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000574 help
575 Make the page size 256k.
576
577 As the ELF standard only requires alignment to support page
578 sizes up to 64k, you will need to compile all of your user
579 space applications with a non-standard binutils settings
580 (see the STDBINUTILS description for details).
581
582 Say N unless you know what you are doing.
583
Ilya Yanokca9153a2008-12-11 04:55:41 +0300584endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100585
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000586config FORCE_MAX_ZONEORDER
587 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000588 range 9 64 if PPC64 && PPC_64K_PAGES
589 default "9" if PPC64 && PPC_64K_PAGES
590 range 13 64 if PPC64 && !PPC_64K_PAGES
591 default "13" if PPC64 && !PPC_64K_PAGES
592 range 9 64 if PPC32 && PPC_16K_PAGES
593 default "9" if PPC32 && PPC_16K_PAGES
594 range 7 64 if PPC32 && PPC_64K_PAGES
595 default "7" if PPC32 && PPC_64K_PAGES
596 range 5 64 if PPC32 && PPC_256K_PAGES
597 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000598 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000599 default "11"
600 help
601 The kernel memory allocator divides physically contiguous memory
602 blocks into "zones", where each zone is a power of two number of
603 pages. This option selects the largest power of two that the kernel
604 keeps in the memory allocator. If you need to allocate very large
605 blocks of physically contiguous memory, then you may need to
606 increase this value.
607
608 This config option is actually maximum order plus one. For example,
609 a value of 11 means that the largest free memory block is 2^10 pages.
610
611 The page size is not necessarily 4KB. For example, on 64-bit
612 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
613 this in mind when choosing a value for this option.
614
Paul Mackerrasfa282372008-01-24 08:35:13 +1100615config PPC_SUBPAGE_PROT
616 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300617 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100618 help
619 This option adds support for a system call to allow user programs
620 to set access permissions (read/write, readonly, or no access)
621 on the 4k subpages of each 64k page.
622
Ian Munsiee83d0162014-10-08 19:54:50 +1100623config PPC_COPRO_BASE
624 bool
625 default n
626
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000627config SCHED_SMT
628 bool "SMT (Hyperthreading) scheduler support"
629 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000630 help
631 SMT scheduler support improves the CPU scheduler's decision making
632 when dealing with POWER5 cpus at a cost of slightly increased
633 overhead in some places. If unsure say N here.
634
Michael Neulingb92a66a2012-09-10 00:35:26 +0000635config PPC_DENORMALISATION
636 bool "PowerPC denormalisation exception handling"
637 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000638 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000639 ---help---
640 Add support for handling denormalisation of single precision
641 values. Useful for bare metal only. If unsure say Y here.
642
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000643config CMDLINE_BOOL
644 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000645
646config CMDLINE
647 string "Initial kernel command string"
648 depends on CMDLINE_BOOL
649 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
650 help
651 On some platforms, there is currently no way for the boot loader to
652 pass arguments to the kernel. For these platforms, you can supply
653 some command-line options at build time by entering them here. In
654 most cases you will need to specify the root device here.
655
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100656config CMDLINE_FORCE
657 bool "Always use the default kernel command string"
658 depends on CMDLINE_BOOL
659 help
660 Always use the default kernel command string, even if the boot
661 loader passes other arguments to the kernel.
662 This is useful if you cannot or don't want to change the
663 command-line options your boot loader passes to the kernel.
664
Grant Likelyc356aa42008-07-09 09:41:52 -0600665config EXTRA_TARGETS
666 string "Additional default image types"
667 help
668 List additional targets to be built by the bootwrapper here (separated
669 by spaces). This is useful for targets that depend of device tree
670 files in the .dts directory.
671
672 Targets in this list will be build as part of the default build
673 target, or when the user does a 'make zImage' or a
674 'make zImage.initrd'.
675
676 If unsure, leave blank
677
Johannes Bergb28f5082008-01-15 23:17:00 -0500678config ARCH_WANTS_FREEZER_CONTROL
679 def_bool y
680 depends on ADB_PMU
681
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000682source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000683
684config SECCOMP
685 bool "Enable seccomp to safely compute untrusted bytecode"
686 depends on PROC_FS
687 default y
688 help
689 This kernel feature is useful for number crunching applications
690 that may need to compute untrusted bytecode during their
691 execution. By using pipes or other transports made available to
692 the process as file descriptors supporting the read/write
693 syscalls, it's possible to isolate those applications in
694 their own address space using seccomp. Once seccomp is
695 enabled via /proc/<pid>/seccomp, it cannot be disabled
696 and the task is only allowed to execute a few safe syscalls
697 defined by each seccomp mode.
698
699 If unsure, say Y. Only embedded should say N here.
700
701endmenu
702
703config ISA_DMA_API
704 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000705 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000706
707menu "Bus options"
708
709config ISA
710 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000711 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000712 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000713 help
714 Find out whether you have ISA slots on your motherboard. ISA is the
715 name of a bus system, i.e. the way the CPU talks to the other stuff
716 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000717 have an IBM RS/6000 or pSeries machine, say Y. If you have an
718 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000719
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800720config ZONE_DMA
721 bool
722 default y
723
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800724config NEED_DMA_MAP_STATE
725 def_bool (PPC64 || NOT_COHERENT_CACHE)
726
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700727config NEED_SG_DMA_LENGTH
728 def_bool y
729
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000730config GENERIC_ISA_DMA
731 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000732 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000733 default y
734
Paul Mackerras25635c72005-10-26 16:36:55 +1000735config PPC_INDIRECT_PCI
736 bool
737 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600738 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000739 default n
740
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000741config EISA
742 bool
743
744config SBUS
745 bool
746
Kumar Gala08264cb2006-01-10 21:43:56 -0600747config FSL_SOC
748 bool
749
Roy Zang55c44992007-07-10 18:44:34 +0800750config FSL_PCI
751 bool
752 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600753 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800754
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400755config FSL_PMC
756 bool
757 default y
758 depends on SUSPEND && (PPC_85xx || PPC_86xx)
759 help
760 Freescale MPC85xx/MPC86xx power management controller support
761 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
762
Victor Gallardod164f6d2010-10-08 10:25:27 +0000763config PPC4xx_CPM
764 bool
765 default y
766 depends on SUSPEND && (44x || 40x)
767 help
768 PPC4xx Clock Power Management (CPM) support (suspend/resume).
769 It also enables support for two different idle states (idle-wait
770 and idle-doze).
771
Stefan Roese2a706912008-03-26 22:39:50 +1100772config 4xx_SOC
773 bool
774
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400775config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800776 bool "Freescale Local Bus support"
777 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400778 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800779 Enables reporting of errors from the Freescale local bus
780 controller. Also contains some common code used by
781 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400782
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400783config FSL_GTM
784 bool
785 depends on PPC_83xx || QUICC_ENGINE || CPM2
786 help
787 Freescale General-purpose Timers support
788
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000789# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
790config MCA
791 bool
792
John Rigbyb5005632008-06-26 11:07:56 -0600793# Platforms that what PCI turned unconditionally just do select PCI
794# in their config node. Platforms that want to choose at config
795# time should select PPC_PCI_CHOICE
796config PPC_PCI_CHOICE
797 bool
798
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000799config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600800 bool "PCI support" if PPC_PCI_CHOICE
801 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000802 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000803 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200804 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000805 help
806 Find out whether your system includes a PCI bus. PCI is the name of
807 a bus system, i.e. the way the CPU talks to the other stuff inside
808 your box. If you say Y here, the kernel will include drivers and
809 infrastructure code to support PCI bus devices.
810
811config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600812 def_bool PCI
813
814config PCI_SYSCALL
815 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000816
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000817config PCI_QSPAN
818 bool "QSpan PCI"
819 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000820 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000821 help
822 Say Y here if you have a system based on a Motorola 8xx-series
823 embedded processor with a QSPAN PCI interface, otherwise say N.
824
825config PCI_8260
826 bool
827 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000828 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000829 default y
830
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500831source "drivers/pci/pcie/Kconfig"
832
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000833source "drivers/pci/Kconfig"
834
835source "drivers/pcmcia/Kconfig"
836
837source "drivers/pci/hotplug/Kconfig"
838
Zhang Weif1f389d2008-04-18 13:33:39 -0700839config HAS_RAPIDIO
840 bool
841 default n
842
843config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800844 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700845 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700846 help
847 If you say Y here, the kernel will include drivers and
848 infrastructure code to support RapidIO interconnect devices.
849
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700850config FSL_RIO
851 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800852 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700853 default "n"
854 ---help---
855 Include support for RapidIO controller on Freescale embedded
856 processors (MPC8548, MPC8641, etc).
857
Zhang Weif1f389d2008-04-18 13:33:39 -0700858source "drivers/rapidio/Kconfig"
859
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000860endmenu
861
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000862config NONSTATIC_KERNEL
863 bool
864 default n
865
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000866menu "Advanced setup"
867 depends on PPC32
868
869config ADVANCED_OPTIONS
870 bool "Prompt for advanced kernel configuration options"
871 help
872 This option will enable prompting for a variety of advanced kernel
873 configuration options. These options can cause the kernel to not
874 work if they are set incorrectly, but can be used to optimize certain
875 aspects of kernel memory management.
876
877 Unless you know what you are doing, say N here.
878
879comment "Default settings for advanced configuration options are used"
880 depends on !ADVANCED_OPTIONS
881
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000882config LOWMEM_SIZE_BOOL
883 bool "Set maximum low memory"
884 depends on ADVANCED_OPTIONS
885 help
886 This option allows you to set the maximum amount of memory which
887 will be used as "low memory", that is, memory which the kernel can
888 access directly, without having to set up a kernel virtual mapping.
889 This can be useful in optimizing the layout of kernel virtual
890 memory.
891
892 Say N here unless you know what you are doing.
893
894config LOWMEM_SIZE
895 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
896 default "0x30000000"
897
Trent Piepho96051462008-12-08 19:34:58 -0800898config LOWMEM_CAM_NUM_BOOL
899 bool "Set number of CAMs to use to map low memory"
900 depends on ADVANCED_OPTIONS && FSL_BOOKE
901 help
902 This option allows you to set the maximum number of CAM slots that
903 will be used to map low memory. There are a limited number of slots
904 available and even more limited number that will fit in the L1 MMU.
905 However, using more entries will allow mapping more low memory. This
906 can be useful in optimizing the layout of kernel virtual memory.
907
908 Say N here unless you know what you are doing.
909
910config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400911 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800912 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
913 default 3
914
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000915config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800916 bool "Enable page aligned dynamic load address for kernel"
917 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000918 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000919 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000920 This option enables the kernel to be loaded at any page aligned
921 physical address. The kernel creates a mapping from KERNELBASE to
922 the address where the kernel is loaded. The page size here implies
923 the TLB page size of the mapping for kernel on the particular platform.
924 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000925
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000926 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
927 kernel image, where the only restriction is the page aligned kernel
928 load address. When this option is enabled, the compile time physical
929 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000930
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000931 This option is overridden by CONFIG_RELOCATABLE
932
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000933config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800934 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800935 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000936 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000937 help
938 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000939 location the kernel is loaded at, without any alignment restrictions.
940 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000941
942 One use is for the kexec on panic case where the recovery kernel
943 must live at a different physical address than the primary
944 kernel.
945
946 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
947 it has been loaded at and the compile time physical addresses
948 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
949 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000950 load address of the kernel (eg. u-boot/mkimage).
951
952config RELOCATABLE_PPC32
953 def_bool y
954 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000955
956config PAGE_OFFSET_BOOL
957 bool "Set custom page offset address"
958 depends on ADVANCED_OPTIONS
959 help
960 This option allows you to set the kernel virtual address at which
961 the kernel will map low memory. This can be useful in optimizing
962 the virtual memory layout of the system.
963
964 Say N here unless you know what you are doing.
965
966config PAGE_OFFSET
967 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
968 default "0xc0000000"
969
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000970config KERNEL_START_BOOL
971 bool "Set custom kernel base address"
972 depends on ADVANCED_OPTIONS
973 help
974 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000975 the kernel will be loaded. Normally this should match PAGE_OFFSET
976 however there are times (like kdump) that one might not want them
977 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000978
979 Say N here unless you know what you are doing.
980
981config KERNEL_START
982 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000983 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000984 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000985 default "0xc0000000"
986
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000987config PHYSICAL_START_BOOL
988 bool "Set physical address where the kernel is loaded"
989 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
990 help
991 This gives the physical address where the kernel is loaded.
992
993 Say N here unless you know what you are doing.
994
995config PHYSICAL_START
996 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000997 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000998 default "0x00000000"
999
1000config PHYSICAL_ALIGN
1001 hex
Trent Piephoc8f35702008-12-08 19:34:59 -08001002 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001003 help
1004 This value puts the alignment restrictions on physical address
1005 where kernel is loaded and run from. Kernel is compiled for an
1006 address which meets above alignment restriction.
1007
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001008config TASK_SIZE_BOOL
1009 bool "Set custom user task size"
1010 depends on ADVANCED_OPTIONS
1011 help
1012 This option allows you to set the amount of virtual address space
1013 allocated to user tasks. This can be useful in optimizing the
1014 virtual memory layout of the system.
1015
1016 Say N here unless you know what you are doing.
1017
1018config TASK_SIZE
1019 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001020 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001021 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001022
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001023config CONSISTENT_SIZE_BOOL
1024 bool "Set custom consistent memory pool size"
1025 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1026 help
1027 This option allows you to set the size of the
1028 consistent memory pool. This pool of virtual memory
1029 is used to make consistent memory allocations.
1030
1031config CONSISTENT_SIZE
1032 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1033 default "0x00200000" if NOT_COHERENT_CACHE
1034
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001035config PIN_TLB
1036 bool "Pinned Kernel TLBs (860 ONLY)"
1037 depends on ADVANCED_OPTIONS && 8xx
1038endmenu
1039
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001040if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001041config RELOCATABLE
1042 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001043 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001044 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001045 help
1046 This builds a kernel image that is capable of running anywhere
1047 in the RMA (real memory area) at any 16k-aligned base address.
1048 The kernel is linked as a position-independent executable (PIE)
1049 and contains dynamic relocations which are processed early
1050 in the bootup process.
1051
1052 One use is for the kexec on panic case where the recovery kernel
1053 must live at a different physical address than the primary
1054 kernel.
1055
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001056# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001057config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001058 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001059 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001060config KERNEL_START
1061 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001062 default "0xc000000000000000"
1063config PHYSICAL_START
1064 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001065 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001066endif
1067
Michael Ellermana4da0d52013-10-11 14:07:57 +11001068config ARCH_RANDOM
1069 def_bool n
1070
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001071source "net/Kconfig"
1072
1073source "drivers/Kconfig"
1074
1075source "fs/Kconfig"
1076
Li Yang98658532006-10-03 23:10:46 -05001077source "arch/powerpc/sysdev/qe_lib/Kconfig"
1078
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001079source "lib/Kconfig"
1080
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001081source "arch/powerpc/Kconfig.debug"
1082
1083source "security/Kconfig"
1084
1085config KEYS_COMPAT
1086 bool
1087 depends on COMPAT && KEYS
1088 default y
1089
1090source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001091
Sylvain Munaut1088a202007-09-16 20:53:25 +10001092config PPC_LIB_RHEAP
1093 bool
1094
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001095source "arch/powerpc/kvm/Kconfig"